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Finding the Fourth Proportional to 217,885.28, 300,738.84 and 122,422.74

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Solution

The fourth proportional to 217,885.28, 300,738.84 and 122,422.74 is: 168,975.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,885.28 : 300,738.84 = 122,422.74 : x
  2. Step 2: Convert to fraction form
    217,885.28/300,738.84 = 122,422.74/x
  3. Step 3: Cross multiply
    217,885.28x = 300,738.84 × 122,422.74
  4. Step 4: Simplify right side
    217,885.28x = 36,817,272,817.22
  5. Step 5: Solve for x
    x = 36,817,272,817.22/217,885.28
  6. Step 6: Final answer
    x = 168,975.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.